Tag Archives: Analog Synthesis

Midnight Playground

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Midnight Playground is an interactive, kinetic, installation by Peng Wu, Jack Pavlik, John Keston, and Analaura Juarez. Peng initiated and directed the idea, Jack built the jump rope robot, and Annalaura helped refine the concept and promote the piece. My role was to produce the music and track it to the still images that Peng had selected. I ended up making a one hour video with thirty minutes of the image from the moon followed by a four second transition into another thirty minutes with an image of Mars. To produce the sound I gave Peng a list of audio excerpts that had all been previously posted on AudioCookbook in One Synthesizer Sound Every Day. He picked the two that he thought would work the best and I went back to my original recordings and processed them specifically for the piece by adding some reverb and delay to enhance the spacial properties of the music. The piece will be on display in Gallery 148 at the Minneapolis College of Art and Design through January 29, 2012.

DKO Performance Tonight at Acadia

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Tonight (Friday, January 6, 2012) DKO is performing our first concert of the year. We’ll play two sets at Acadia, 329 Cedar Ave S., Minneapolis, MN 55454. This little gem of a venue has one of the best beer selections in the city. There’s no cover and all ages are welcome. Here’s another segment from our December 16, 2011 performance at the Kitty Cat Klub. This one starts out with some Pro-One arpeggios then moves into Rhodes playing with a solo at 4:43 and then a Pro-One solo at about 9:25.

Pro-One Calibration and J-Wire Cleaning

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I recently cleaned the j-wires and re-calibrated my Sequential Circuits Pro-One. I cleaned the j-wires and the contact bar with isopropyl alcohol and cotton swaps, although proper contact cleaner is recommended. I also gently bent a few of the wires to improve the connection to the contact bar.

I knew about the calibration problem prior to any of this maintenance, but I noticed it even more after cleaning the j-wires. I’m not sure why this would be the case, but I resolved to take a stab at the calibration myself having not attempted it before. Looking on the scope I could see that an octave on the keyboard was actually a quarter tone sharp and therefore unplayable. I made the necessary adjustments for both oscillators and now it sounds great.

After the calibration I produced this sequence entirely on the Pro-One in a single take by programming two short sequences into the on-board sequencer. The first sequence was played at several pitches to create a progression. I also switched off the oscillator sync at the same time I switched to the second sequence to create an octave doubling of the melody then re-enabled the sync at 1:41.

Pro-One-Sequence-Calibrated

Parasite

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Call it a bomb whistle or a filter sweep. In any case this descending analog tone is doubled on another layer with a twenty-second delay. Over the top of that I introduced some glitchy analog crackles about a minute into it.

Parasite